Exhibit 12(b) THE MONTANA POWER COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (DOLLARS IN THOUSANDS) TWELVE MONTHS ENDED SEPTEMBER 30, 1996 ------------------ Net Income $72,594 Income Taxes 37,983 ------------ $110,577 ------------ Fixed Charges: Interest $49,468 Amortization of Debt Discount, Expense and Premium 1,570 Rentals 34,585 ------------ $85,623 Earnings Before Income Taxes and Fixed Charges $196,200 ============ Ratio of Earnings to Fixed Charges 2.29 x ============